Thanks for all the replies everyone!
Hope the drinkers here realize we're not standing in judgement AT ALL. For us it's about checking our will power and also gauging the strength of this particular habit. At 2 1/2 days in, we're doing fine, but I have to admit the habit is very powerful. One thing that helps us is to have some substitutes available rather than just plain old tap water. For dinner we'll have chilled, sparkling water, perhaps with a bit of lime. In the evening, a cup of Good Earth non-caffeinated tea helps me continue the habit of sipping on something while reading or watching a movie.
Also, in the interests of complete transparency, we fully plan on boozing it up one Saturday night during January. It's the night one of our employers has an annual employee dinner and the gourmet food and world-class wines that are poured that night are just too much for us to pass up. So, we're not technically going 30 days straight. It's 30 out of 31 days.
To life!!
om